To find the fraction of the total amount of students that are 9th graders, we need to add together the number of 8th graders and the number of 9th graders:
Total students = 77 (8th graders) + 112 (9th graders) = 189 students
Fraction of 9th graders = 112 (9th graders) / 189 (total students) = 112/189 = 56/94 = 28/47
Therefore, 28/47 of the total amount of students are 9th graders.
To find the fraction of 8th grade students that are boys, we need to divide the number of boys (45) by the total number of 8th graders (77):
Fraction of 8th grade students that are boys = 45 (boys) / 77 (8th graders) = 45/77
Therefore, the fraction of 8th grade students that are boys is 45/77.
There are 77 total 8th graders (45 of them are boys)
There are 112 total girls
What fraction of the total amount of students are 9th graders? What fraction of 8th grade students are boys?
1 answer